play/pause image fix

src/ui/view/TimePanel.java

@@ -49,7 +49,7 @@ public class TimePanel extends JPanel {
 			public void actionPerformed(ActionEvent ae) {
 				timeSlider.setValue(timeSlider.getValue() + 1);
 				controller.setCurIteration(timeSlider.getValue());
-				if (timeSlider.getValue() == model.getIterations()) {
+				if (timeSlider.getValue() == model.getIterations()-1) {
 					running = false;
 					playBtn.setIcon(new ImageIcon(new ImageIcon(this.getClass().getResource("/Button_Images/play.png"))
 							.getImage().getScaledInstance(30, 30, Image.SCALE_SMOOTH)));